Do not show the install prompt for themes.

chrome/browser/extensions/bundle_installer.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/bundle_installer.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 248 matching lines @@
   for (size_t i = 0; i < dummy_extensions_.size(); ++i) {
     permissions = ExtensionPermissionSet::CreateUnion(
           permissions, dummy_extensions_[i]->required_permission_set());
   }
 
   if (g_auto_approve_for_test == PROCEED) {
     InstallUIProceed();
   } else if (g_auto_approve_for_test == ABORT) {
     InstallUIAbort(true);
   } else {
-    ExtensionInstallUI::Prompt prompt(
-        ExtensionInstallUI::BUNDLE_INSTALL_PROMPT);
-    prompt.SetPermissions(permissions->GetWarningMessages());
-    prompt.set_bundle(this);
-
-    ShowExtensionInstallDialog(profile_, this, prompt);
+    install_ui_.reset(new ExtensionInstallUI(profile_));
+    install_ui_->ConfirmBundleInstall(this, permissions);
   }
 }
 
 void BundleInstaller::ShowInstalledBubbleIfDone() {
   // We're ready to show the installed bubble when no items are pending.
   if (!GetItemsWithState(Item::STATE_PENDING).empty())
     return;
 
   if (browser_)
     ShowInstalledBubble(this, browser_);
@@ skipping 55 matching lines @@
 
 void BundleInstaller::OnBrowserRemoved(const Browser* browser) {
   if (browser_ == browser)
     browser_ = NULL;
 }
 
 void BundleInstaller::OnBrowserSetLastActive(const Browser* browser) {
 }
 
 }  // namespace extensions